config: create the config dir recursively for edit

src/config/edit.zig

@@ -9,16 +9,9 @@ pub fn open(alloc_gpa: Allocator) !void {
     const config_path = try internal_os.xdg.config(alloc_gpa, .{ .subdir = "ghostty/config" });
     defer alloc_gpa.free(config_path);
 
-    // Check if the directory exists, create it if it doesn't. This dirname
-    // call should always succeed but we still check for errors just in case,
-    // no harm if we skip this step the open may just fail.
+    // Create config directory recursively.
     if (std.fs.path.dirname(config_path)) |config_dir| {
-        _ = std.fs.makeDirAbsolute(config_dir) catch |err| {
-            switch (err) {
-                error.PathAlreadyExists => {},
-                else => return err,
-            }
-        };
+        try std.fs.cwd().makePath(config_dir);
     }
 
     // Try to create file and go on if it already exists